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为了提高40%乙草胺.莠去津悬浮乳剂制剂稳定性,并为实际生产提供依据,本试验以平均粒径和ze-ta电位为判断依据对40%乙草胺.莠去津悬浮乳剂的润湿分散剂进行了筛选,研究了分散剂种类和用量、研磨时间对制剂稳定性的影响,并对制剂的低温、热贮稳定性进行了测定。结果表明:分散剂EH∶分散剂萘磺酸甲醛缩合物=1∶4,复配分散剂总用量为1.5%,研磨时间为1.5h时可以制得平均粒径在1～2μm,悬浮率在90%以上,流动性、稳定性良好的悬浮乳剂。
In order to improve the stability of the formulation of 40% acetochlor and atrazine suspension emulsion, and to provide a basis for actual production, this experiment based on the average particle size and ze-ta potential as the basis for the determination of 40% acetochlor, atrazine suspension emulsion Of the wetting and dispersing agent were screened, the type and amount of dispersant, grinding time on the stability of the preparation, and the preparation of the low temperature, heat storage stability was determined. The results showed that the dispersant EH: dispersant naphthalenesulfonic acid formaldehyde condensate = 1: 4, the total amount of compound dispersant was 1.5%, the milling time was 1.5h, the average particle size was 1 ~ 2μm, the suspension rate was 90 % Or more, liquidity, good stability of the suspension emulsion.